The water vapor in
the cooling air mass condenses and rains, and rains and rains all over the equator in the Tropical zones.
It was caused by a weather front with a warm tropical air mass (it is currently high summer in South America) moving southward and meeting a somewhat
cooler air mass.
Not exact matches
Looking at radar images of the derecho, the system appears as a kind of boomerang - shaped band of high - intensity winds with a circular,
cooler mass of
air behind it.
«The cold
air mass helps to
cool the warm and wet
mass, causing significant precipitation at low levels,» explains Gascón, lead author of the study, who reiterates that this situation does not happen very frequently in winter.
Areas west of the Continental Divide typically exhibit milder winters,
cooler summers, and a longer growing season due to the influence of warm Pacific
air masses (see Climate chapter).
If a smaller
mass of
air has to pass through the evaporator, less energy ends up in the refrigerant liquid, so the evaporator
cools down faster.
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The inversion itself is usually initiated by the
cooling effect of the water on the surface layer of an otherwise warm
air mass.
Fog in the channel is caused by a large, warm
air mass passing over
cool water.
Isn't one important feature of
cooling the stratosphere by emitting heat absorbed by ozone from incoming shortwave radiation, that this
cooling has little effect on lower parts of the atmosphere since there is not much mixing between these
air masses?
The smaller the lid gets — because warmer water is eating away at its edges and its underside — the more that warmer water is exposed to the local
air mass, the less that
air is
cooled by contact with ice.
Re 346 ziarra — the flow of heat (between adjacent layers of material via conduction, convection, or
mass diffusion, or potentially across larger distances via emission and absorption of photons) will be from hot to cold (or from higher to lower concentrations of a substance carrying heat, which might end up being from cold to hot in some conditions, such as a wet surface
cooling by evaporation into warm dry
air).
There can / will also be a shift in the tropopause (relative to
mass — I am not referring to thermal expansion, though that happens; thermal contraction happens in layers that
cool), which means that some layer of
air is reclassified from stratospheric to tropospheric (for an upward shift).
A warm
air mass moving over a
cooler surface is
cooled from below and becomes stable in the lowest layers.
If we look at the temperature profiles of the previous example, the effects of warming and
cooling on the respective
air masses are very different.
In order for the
air to start
cooling, the entire
air mass must be losing more heat from radiation than it is gaining from the water.
The strategy involves avoiding daytime heat gains, using
cool night
air for thermal
mass cooling, and evaporative
cooling on a few occasions.
And I would challenge that assertion; Rather basic meteorological observations show that we warm faster and also
cool - off faster when a dry
air -
mass is in place in this part of Texas vs a humid
air -
mass...
So the whole rising
air mass experiences less
cooling than it would in a dry atmosphere.
Within minutes, the
air began to
cool down as the thermal
mass of the house absorbed the heat.
Approximately 70 % of the building is naturally ventilated and
cooled; the building is «night flushed» of all hot
air and utilizes interior thermal
mass to moderate daytime interior temperatures.
While it's true that thick, beefy bodies of material can soak up heat during the day and then radiate that heat again when the
air is
cooler, this principle doesn't work if the thermal
mass isn't insulated.
The basic question is: does it make sense to use a fan forced flow of
cool night
air over thermal
mass to store «coolth» for later use in daytime
cooling?
The reasoning for this is that the
air masses expand and
cool while rising and compress and heat while descending.
The great thermal
mass of a cellar, while being its biggest asset, also means that intentionally heating and
cooling a cellar will be slow (I do not heat or
cool my cellar, apart from using the door to let in
cool or warm
air as desired);
In order to ascertain whether there is a global warming or
cooling trend it is necessary to wait several years and then compare the volume and intensity of the cold polar
air masses as a whole between the dates chosen.
The total
air column
mass is constant, and given the adiabatic control volume as shown neither heated or
cooled by surroundings nor by radiation (GHG - free) or by interaction with adjacent
air or ground; we need to find the equilibrium temperature profile of this gas column and we need only 2 laws: the 1st and 2nd thermo laws.
I also think that increasing urbanization would affect this factor, as urban surfaces would get hotter than the
air temperature during the day and would not be as likely to
cool at night to a temperature below the
air temperature because they started out hotter at sundown and they have more thermal
mass.
There is 10 tons of atmosphere per square meter - this has a high thermal capacity and during the night this
air mass cools.
Water content in
air naturally
cools it, as water requires some 4000 times more energy to warm when compared same
mass of
air.
Adiabatic
cooling of ascending
air masses does not represent a loss of energy from an
air mass and therefore does not create a loss of buoyancy.
The dramatic lapse rate exhibited below the tropopause is due the the pneumatic
cooling and heating of vertically moving
air masses and horizontal conduction.
So unless the
air circulation becomes more zonal / poleward again we will continue to see more incursions of both polar and equatorial
air masses into the mid latitudes (with the greater extremes that implies) but with a generally
cooling trend.
As an
air mass is
cooled and precipitates, it preferentially loses heavy water and must increasingly precipitate light water.
A front is a boundary between two different types of
air masses, these are normally warm moist
air masses from the tropics and
cooler drier
air masses from polar regions.
When the Arctic Oscillation is negative, cold Arctic
air masses tend to plunge southward and into the U.S., spawning snowstorms and leading to
cooler than average conditions.
Though
cool and dry relative to equatorial
air, the
air masses at the 60th parallel are still sufficiently warm and moist to undergo convection and drive a thermal loop.
Unless this really warm
air contacts some much
cooler air (or
cooler land
mass), there's nothing to coax the moisture out of the
air in the form of precipitation (rain, fog).
Temperatures often fluctuate in the Arctic due to the strength or weakness of the polar vortex, the circle of winds — including the jetstream — that help to deflect warmer
air masses and keep the region
cool.
Model studies suggest that a collapse of the AMOC could lead to a reduction in surface
air temperature of around 1 - 3 °C in the North Atlantic region and surrounding land
masses, but with local
cooling of up to 8 °C in areas of increased sea ice (Vellinga and Wood, 2002; Vellinga et al 2002; Manabe and Stouffer; 1997; Jacob et al 2005).
But with a
cooler Gulf of Mexico, there would be less water in that warm
air running in to a northern cold
air mass, so less rain during that cold season.
The
air inside the house slowly heats (or
cools, in summer) that thermal
mass.
The polar
air masses become stronger or weaker as they are allowed to warm or
cool by variable rates of energy release to space (unless someone has a better idea).
Air masses are more mobile than the ocean waters, and when they move to a
cooler region, the water vapor condenses as rain or snow, leaving the heat energy in the atmossphere.
The CO2 absorption / emission is going on everywhere to move heat into the nitrogen / oxygen everywhere too, creating
masses of
air that rise and are displaced by
cooler air, pushing the warmer
air still higher up, where eventually heat is emitted into outer space.»
Note that the
cooling air exits the
cooling tunnel and goes into the shop where it
cools some of the shop thermal
mass (walls etc.) before exiting out a window across the shop that is left partly open — so the same fan provides
cooling it two ways.